Hello,in SBS2003 I created Some Domain User with Mailbox.In This Mailbox I append rights for all Domain Users and set this rights only"Read permissions" .Other domain users can include this mailbox to Outlook, but they can not unroll and read in this mailbox.What else I must set for mailbox?Thank YouOndrejD

Well, read only permission might be difficult to set but not impossible. If you want to set read only permission, you need to give Mapi Permission at folder level inside mailbox starting from "Mailbox <Target Mailbox Display Name>" and to all sub folders where you want to give Reviewer permission to your users or group. Check below article for further detail. Minimum permissions necessary to access mailbox data http://msexchangeteam.com/archive/2006/01/25/418099.aspx To give reviewer permission to all user you can set Default permission to Reviewer on all folders inside mailbox..Amit Tank | MVP Exchange Server | MCITP: EMA | MCSA: M | http://ExchangeShare.WordPress.com